M55 the worst device I've ever had I have to write here for a M56, because there is no M55 anymore at this web. M55 is turned to be the worst electronic device I've ever had. For the second time a year I will replace the DVD drive. It stops reading disks, doesn't open, loses settings and so on. Even cheapest devices don't behave this way. It's not a Master series, it's useless. I'm gonna sell it for spare parts because don't want to spend another 300 bucks for a replacement of the drive! Yes, performance of the device is good as promised, but it's mechanical part is a mess. I just wanted to switch to M56, but now I wouldn't do it!